Part of a faucet



FIG. 1 is a perspective view thereof;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side view, all sides being identical; and,

FIG. 4 is a top plan view.

The broken line showing of environmental structure is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a part of a faucet, as shown and described. 